Optical sorting machine



FIG. 1 is a perspective view of an optical sorting machine showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

CLAIM I claim the ornamental design for an optical sorting machine, as shown and described. 